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arXiv · 2103.03127

Newly observed $X(4630)$: a new charmoniumlike molecule

Xin-Dian Yang·Fu-Lai Wang·Zhan-Wei Liu·Xiang Liu
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Abstract

Very recently, the LHCb Collaboration at the Large Hadron Collider at CERN observed new resonance $X(4630)$. The $X(4630)$ is decoded as a charmoniumlike molecule with hidden-strange quantum number well in the one boson exchange mechanism. Especially, the study of its hidden-charmed decays explicitly shows the dominant role of $J/\psi\phi$ among all allowed hidden-charmed decays of $X(4630)$, which enforces the conclusion of $X(4630)$ as a charmoniumlike molecule. The discovery of the $X(4630)$ is a crucial step of constructing charmoniumlike molecule zoo.

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Xin-Dian Yang, Fu-Lai Wang, Zhan-Wei Liu, Xiang Liu. 2021-03-04. Newly observed $X(4630)$: a new charmoniumlike molecule. https://doi.org/10.1140/epjc%2Fs10052-021-09606-7

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